Re: [Elecraft] K2/100 10m SSB Distortion
Just a thought. Do you have a KAT2 ATU in-circuit in the K2 when using the KPA100 ? I had a problem with VRFDET voltages fighting each other causing distortion on 10m only, both on dummy load and antenna. My solution is to disconnect the KAT2 when not using it. 73 Stewart G3RXQ On Wed, 6 Sep 2006 08:23:27 +0300, Kasari, Juha wrote: Tnx for reply Ron I tested with dummy load and no difference! I took away kpa100 and running qrp, it sounds very good on all band, even on 10m and more than 10 watts. But with kpa100 and full output there is disdortion on 10m. I noted I have made Grounding of mic jack and RF filter on input of compressor mods. No KI6WX mods. 73 de juha oh6os If it's on one band, it's usually RF getting into the audio circuits on that band, most commonly through the microphone connector. One other thing that could be a factor with the K2 is that on 10 meters the output is usually the lowest, so it's just possible that you're over-driving the rig with audio on that band to make full output. Are you using an external mic preamplifier? That's a common source of both RF feedback into the audio and for enough audio to over-drive the rig. Even if you have no audio preamplifier, the possibility of RF getting into the mic is the first thing to check. The easiest way to do that is to switch from your antenna to a good dummy load and compare your audio on a monitor receiver. Ron AC7AC Hello, What is the problem? My ssb-transmit has distortion on 10m. The other bands are ok. I have no mods on ksb2. k2/4781 73 de juha oh6os -- ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] Re: ROHS Compliant/Lead Solder
I knew this would stir things up a bit from the other side of the pond. Two final comments. I did a search at the UK dti.gov.uk website, the issued ROHS Directive and other linked sites, and NOWHERE could I find among the numerous exemptions one saying that kit and homebrew equipment is (or is proposed to be) exempt. If somebody can find a definitive statement then please produce it. Elecraft kits are now being produced with ROHS compliant parts, which allows them to be imported into Europe under the new directive both by individuals and other companies (Peter at QRPProject for instance). Under the directive, unless otherwise exempt, the directive dictates that such equipment MUST be assembled with lead free solder. Much as I detest lead free solder myself with all its problems and that it is going to do absolutely nothing to reduce lead pollution, that is how the directive at present stands. Those who use leaded solder are breaking the directive by compromising the ROHS compliance of the product. 73 Dave G3YMC http://www.davesergeant.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] Re: ROHS Compliant/Lead Solder
On Wed, 6 Sep 2006, Dave Sergeant wrote: Much as I detest lead free solder myself with all its problems and that it is going to do absolutely nothing to reduce lead pollution, that is how the directive at present stands. Those who use leaded solder are breaking the directive by compromising the ROHS compliance of the product. Perhaps the next step will be for your ROHS compliant office to combine forces with the receiver sniffers that ferret out unlicensed radio receivers... I can envision a task force descending upon some unfortunate hamtesting his newly built K2, radiating not only unlicensed receiver signals, but the evil lead molecules from some Kester solder. 73,Thom-k3hrn www.zerobeat.net Home of QRP Web Ring, Drakelist home page,Drake Web Ring, QRP IRC channel, Drake IRC Channel, Elecraft Owners Database www.tlchost.net/hosting/ *** Web Hosting as low as 3.49/month ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] QRP Contact
I thought I'd post this as a ray of hope to those hard core QRP ops out there. Conditions have been poor lately. I just worked N5PHT with 5 watts. My rst 559 and I sent him 599. Regards, Dave VK2NA ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] Re: ROHS Compliant/Lead Solder
Give it a rest, Fred??? then you throw out more grist for the mill. hi Joe, aa4nn -- Seems to be time to GIVE IT A REST. No one is going to solve the ROHS world, or the MIL SPEC world, of the METRIC for U.S. world either. These things come and go. When they figure out how to remove the LEAD/ACID battery from all of our millions of automobiles - then I'll start to be concerned. How about the lead balancing weights on your tires? Lead sinkers? Lead bullets in Iraq and Tazmania? Lead battery terminals? ... Leaded windows in our churches? Linotype lead in those old european russian printing plants? Fred FL ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] Re: ROHS Compliant/Lead Solder
Dave Sergeant wrote: I knew this would stir things up a bit from the other side of the pond. Two final comments. I did a search at the UK dti.gov.uk website, the issued ROHS Directive and other linked sites, and NOWHERE could I find among the numerous exemptions one saying that kit and homebrew equipment is (or is proposed to be) exempt. If somebody can find a definitive statement then please produce it. Hi Dave, since you live in England, does your car have a lead-acid battery? Are your tires balanced by lead weights? Can you buy fishing weights made of lead? 73 Karl K5DI ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] KX1 in Tanzania - 5H2JD
Hope to have a wire up this Saturday from Arusha and then as time permits from various 5H locations through 19 September. Call sign is 5H2JD and will operate when time permits on 14060-61, 14025-27, 10119-120 and 7025-27. Operating time windows: not sure because of the tour, but if internet access is available will provide more information once there. Eastern Africa Time = GMT+3 hours. The tour company imposes restrictions on luggage volume and weight while on safari. The KX1 w/internal ATU, spare batteries, ear buds and wire antenna fit into a small, lightweight box - thanks, Elecraft! 73, John K1JD ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] Problem with 17m band in K2 + KAT100/KPA100 in EC2
Hi all, In last Friday I have been finished KAT100/KPA100 in EC2. Few days ago one problem occurred - before TX on 17m RX is OK, after TX on this band RX dropping down. This is only on HI power range, on LOW power range everything is OK. When I change band to other then 17m and then come back to 17m RX stay OK to the TX and then drop down again. When I Off then On K2 or push TUNE key, RX come back to normal. Is anyone know what is the problem? 73, Marcin SQ2AF K2 #5408 ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] SOC Marathon Sprint
Coming up this Saturday, rules below. At last count, we have 716 members, so hopefully we will have good participation. QRP is preferred on the calling frequencies listed, but since more than 5W is allowed in the rules, please limit power to no more than 100W. I'll be using the club call, W0SOC SECOND CLASS OPERATOR'S CLUB MARATHON SPRINT SOC Marathon Sprint Most sprints run four hours, but since we're Second Class Op's, we need more time! Date/Time: Sep. 9, 2006, 1800Z through 2400Z Exchange: Member - RST, State/Province/Country, SOC Number Non-Member - RST, State/Province/Country, Power Out QSO Points: Member = 5 Points Non-Member, Different Continent = 4 Points Non-Member, Same Continent = 2 Points Multiplier: SPC (State/Province/Country) total for all bands. The same station may be worked on more than one band for QSO points and SPC credit. Power Multiplier: 0 - 250mW = X 15 250 mW - 1W = X 10 1W - 5W = X 7 Over 5W = X 1 Suggested Frequencies: 160 Meters1810 kHz 80 Meters 3560 kHz 40 Meters 7040 kHz 20 Meter 14060 kHz 15 Meters21060 kHz 10 Meters28060 kHz Score: Points (total for all bands) X SPCs (total for all bands) X Power Multiplier Apply an additional multiplier of 1.5 if using a homebrew paddle (kits such as the NorCal and AZ ScQRPions paddles qualify). All entries are Multi-Band to promote maximum participation. Entry includes a copy of the log and a separate summary sheet. Indicate total time-on-the-air, and include a legible name, call, SOC Number (if any) and address. All entries must be received within 30 days of the contest date. The highest output power used will determine the power multiplier. Include a description of homebrew equipment (including paddle or key), commercial equipment, and antennas used with each entry. Results may be posted on QRP-L and on the SOC Website. The final decision on all maters concerning the contest rests with the contest manager. Entries are welcome via E-Mail to [EMAIL PROTECTED], or by snail mail to: Bob Patten, N4BP 2841 N.W. 112 Terrace Plantation, FL 33323 -- 73, Bob Patten, N4BPPlantation, FL E-Mail: [EMAIL PROTECTED] Website: http://www.qsl.net/n4bp QRP ARCI #3412SOC #1ARS #799SMIRK #6625 FISTS #7871 ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] re-ROHS
Hi Used to be some lead in the newspaper ink and it was a problem when recycling this kind of paper. Just received a roll of antique solder, just in case I have trouble with the as antique K2, nice and shining soldering at 350° C (650° F). Made in DL-land, BTW. Jacques F9OJ K2 937 ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] 100 watt amp and tuner for sale
Hello All, I'm selling my KPA100 ($350)and KAT100-1 tuner ($200). All nicely built. I'll send nice closeup pictures to show build quality. Thanks, Steve kc7zvm _ Search from any web page with powerful protection. Get the FREE Windows Live Toolbar Today! http://get.live.com/toolbar/overview ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] K2 and Amp in enclosure
Hi all, I have decided to put my K2 and associated equipment in one large case for easier deployment in emergencies. My friend Bill Albert AD5TD has done this with an FT100 in an old camp stove enclosure. There is a rather poor photo of it at: http://www.kristv.com/Global/story.asp?s=5074978 My question is whether I need to space the equipment apart to prevent EMI. I know you need to use the K2VCOSHLDKT mod kit if you want to place the K2 near an amp. I will probably stack the equipment with the K2 on the bottom, The KPA100/KAT100 in the EC2 case above it, a Yaesu FT8100R on top of that, and either an SEC1223, or Astron ss30 switching power supply on top of that. I will be spacing the equipment for some ventilation and the rear side of the case will be removable for additional ventilation during actual operations. Right now I use a muffin fan on top of the KPA100 and will probably permanently mount that on the amp. If anyone can offer any advice it is appreciated. I will probably build the box out of Luan plywood and fiberglass cloth. Having everything assembled in the box will help keep things together during a deployment and also make it easier to operate mobile without leaving something at home. Regards, Steve, W2MY/5 Corpus Christi, TX USA -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.405 / Virus Database: 268.12.0/439 - Release Date: 9/6/2006 ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
RE: [Elecraft] Problem with 17m band in K2 + KAT100/KPA100 in EC2
Marcin, There is nothing in the KPA100 or the base K2 that would cause that problem on 17 meters only. In the base K2, the relay switching is shared for 17 and 15 meters except for relay K6 in the bandpass filter, and in the KPA100, all circuits are shared between 17 and 20 meters. You would have a problem on either 20 meters or 15 meters in addition to 17 meters if it was associated with either the K2 or KPA100 switching relays. If you have a dedicated 17 meter antenna, you may want to investigate the switching to that antenna. TUNE should behave the same as transmit, but you say that receive sensitivity does not drop after TUNE - that is indeed strange. We need more data. 73, Don W3FPR -Original Message- Hi all, In last Friday I have been finished KAT100/KPA100 in EC2. Few days ago one problem occurred - before TX on 17m RX is OK, after TX on this band RX dropping down. This is only on HI power range, on LOW power range everything is OK. When I change band to other then 17m and then come back to 17m RX stay OK to the TX and then drop down again. When I Off then On K2 or push TUNE key, RX come back to normal. Is anyone know what is the problem? 73, Marcin SQ2AF K2 #5408 ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] KX1 in the Swiss Alps - HB9/N9OHW
Hi group, My KX1 is in my backpack with me hiking in the Swiss alps. Tomorrow I'll be in the Berner Oberwald on a long hike, hope to get it on the air. 7030 10106 and 14060. Thanks to Elecraft for such a cool toy to take on a hiking vacation. 73, Mike HB9/N9OHW __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] BUILT FOR SALE K2 S/N 4, 277 w/ 160 Meter Board Installed. (Assembled, New, Unused)
Hello Elecrafters, I have the subject K2 for sale. Bought from a friend who was never able to begin building it. Just completed by myself to sell (hated to see it just sit there). Tuned up/aligned per the Elecraft manual and is operating per specifications. In mint condition. Non smoker here. Includes all manuals plus built up Frequency Counter and RF Probes. Latest Firmware. My previous Elecraft projects include K2 S/N 3,614 with all options and K1 S/N 1,329 also with all options, both are mine and used regularly. $530.00 plus shipping from 08107 (as an example, about $17.00 to Florida). Weight will be approximately 7.5LBS and well packed. Pay-Pal or Postal type Money Order preferred. CONUS only. Please respond off-reflector... Thank you... Ken, W2GIW Oaklyn, NJ ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] FOR SALE Unbuilt KAT2 Auto Tuner
Hello Elecraft builders, I have the subject Auto Tuner for sale. In unopened package. Bought as part of a K2 package. Previous owner never found building time. $159.00 shipped. Pay-Pal or Postal type Money Order preferred. CONUS only. Please respond off-reflector... Thank you... Ken, W2GIW Oaklyn, NJ ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K1-4 on 30/20/17/15 ?
David wrote: I would like to setup a K1-4 for 30/20/17/15, which I believe would need an LPF for 20 and 15). I believe I can do this with all of the parts that come with a K1-4 except that I don't know if it includes an LPF for 20. As supplied, the K1 with KFL1-4 covers 40m, 30m, and any two of the 20m, 17m, or 15m bands. It does NOT cover ANY four of the 40m, 30m, 20m, 17m, 15m bands. Actually, K1 product literature claims that the KFL1-4 coverage is 40m, 30m, 20m, and either 17m or 15m, but the KFL1-4 is actually a little more versatile than that. I guess they thought no one would ever give up 20m coverage. It has two LP filter sections in the transmitter output/receiver input signal path. One LP filter section is switched in by firmware for the two lowest bands (40m and 30m), with a filter cutoff somewhere above 30m but below 20m, where the second harmonics of 40m operation would appear. The other transmitter LP filter section is switched in by firmware for the two highest bands (any two of 20m, 17m, 15m), with a cutoff somewhere above 15m but below 10m, where the second harmonics of 20m operation would occur. Thus, as supplied, the KFL1-4 won't cover 30m, 20m, 17m, and 15m because you'd be trying to put 30m and 20m signals through the same LP filter that cuts off below 20m. Additionally, it would be hard to juggle around the values of the fixed capacitors in the pre-mix and the RF band-pass filters to accomodate 30m and 20m operation for the firmware-programmed bandswitching relay latching action that takes place for 30m and 40m operation. Of course, KFL1-4 firmware could be modified to select one LP filter section for only one band (30m), while selecting the other LP filter section for the other three bands (20m, 17m, 15m), but we don't have the option of altering the KFL1-4 firmware. Your combo is not impossible, but it would take some study, BP/LP filter redesign, and additional parts (fixed capacitors). But be careful. The K1 has the best spurious output specs of any Elecraft rig, and re-design could sacrifice that spec. IMHO, it would be best to choose a combo of bands that the KFL1-4 already supports. Trading off 17m for 40m isn't much of a penalty. It gives you a good night-time band any time of the year or solar cycle. 73, Mike / KK5F K1 No. 175 (Nov. 2000) ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] DX on 30m
Hello, Just worked ZG2FK @ 22:39 UTC on 10106.25 MHz. Gibraltar!! Ernest gave me a 559, running the K2 at 5 w into Butternut HF9V on ground. Easy!! 72 and Thanks, Ron Polityka WB3AAL www.wb3aal.com www.n3epa.org/ K1 - SN 01011 K2 - SN 01392 ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] BUILT FOR SALE K2 S/N 4,277 THANKS.....SOLD
Hello Elecrafters, I have the subject K2 for sale. Bought from a friend who was never able to begin building it. Just completed by myself to sell (hated to see it just sit there). Tuned up/aligned per the Elecraft manual and is operating per specifications. In mint condition. Non smoker here. Includes all manuals plus built up Frequency Counter and RF Probes. Latest Firmware. My previous Elecraft projects include K2 S/N 3,614 with all options and K1 S/N 1,329 also with all options, both are mine and used regularly. $530.00 plus shipping from 08107 (as an example, about $17.00 to Florida). Weight will be approximately 7.5LBS and well packed. Pay-Pal or Postal type Money Order preferred. CONUS only. Please respond off-reflector... Thank you... Ken, W2GIW Oaklyn, NJ ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] DX on 30m
Congrats on the cool DX, Ron! Now, where on the web is an up-to-date and authoritative mapping of callsign prefixes to countries? I can't find ZG here: http://www.425dxn.org/dxcc/dxccmain.html . I would have guessed by interpolation that it was maybe Cayman Islands, which is ZF, but I obviously need a better list, or else I'm overlooking it. Anyway, I'm going to go check out 30m before all the Europeans go to sleep... Thanks 73, Jeff WB5GWB Long Island, NY - Original Message - From: Ron Polityka [EMAIL PROTECTED] To: .Elecraft elecraft@mailman.qth.net Sent: Wednesday, September 06, 2006 6:44 PM Subject: [Elecraft] DX on 30m Hello, Just worked ZG2FK @ 22:39 UTC on 10106.25 MHz. Gibraltar!! Ernest gave me a 559, running the K2 at 5 w into Butternut HF9V on ground. Easy!! 72 and Thanks, Ron Polityka WB3AAL www.wb3aal.com www.n3epa.org/ K1 - SN 01011 K2 - SN 01392 ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
RE: [Elecraft] Problem with 17m band in K2 + KAT100/KPA100 in EC2
Mike, I am certain Marcin will be interested in your results when portable. The only thing that I can think of is a bad connection in the KPA100 T-R switch, but then I am just guessing. Marcins's problem continues until the KPA100 switches out at the 10 watt level, so your problem may be different. 73, Don W3FPR -Original Message- Don, I am experiencing the same or a very similar problem as Marcin. It only happens on 17M and only at high power. That is why we do not see it after a Tune operation. If I turn the power down to 30W or less, no problem. It makes no difference whether the KPA100 is the top cover or remoted in an EC2 with the KAT100. I haven't determined exactly how much power I have to be running before the problem occurs. I suspect RF getting somewhere it shouldn't but have not had the time to track it down. It does seem to be antenna dependent even though I get a good match to the 102 foot doublet I use. I will get a chance to test my theory next week when I take the K2/100 portable for a week using a different antenna than I do at home. If it occurs only at the home QTH then the problem is in the antenna system and probably stray RF affecting something in the K2. 73, Mike K2/100 #2221 At 01:31 PM 9/6/2006, Don Wilhelm wrote: Marcin, There is nothing in the KPA100 or the base K2 that would cause that problem on 17 meters only. In the base K2, the relay switching is shared for 17 and 15 meters except for relay K6 in the bandpass filter, and in the KPA100, all circuits are shared between 17 and 20 meters. You would have a problem on either 20 meters or 15 meters in addition to 17 meters if it was associated with either the K2 or KPA100 switching relays. If you have a dedicated 17 meter antenna, you may want to investigate the switching to that antenna. TUNE should behave the same as transmit, but you say that receive sensitivity does not drop after TUNE - that is indeed strange. We need more data. 73, Don W3FPR ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] K2/100 for sale
FS Elecraft K2/100 SN 5229. Built by non-smoker. Tested and aligned this year by Gary Surrency at Elecraft and not used since. I have been forced to go entirely mobile because of terrible reception at my QTH. All toroids were wound by MM. Equipment: K2 #5229 KDSP2 KSB2 TenTec Mic KNB2 ETSI5 KAT100-1 KPA100 KBT2 Heil ProSet K2 Heil MD2 Desktop MIc All uninstalled options prefinished with Rework Eliminators. My cost over $1900. Will sell all for $1425. You pay shipping. Will give preference to buyers of complete package. Also FS: Complete Buddipole Deluxe w/long mast long bag. Cost $450. Will sell for $340. Please contact me off the reflector at [EMAIL PROTECTED] KG6ZVT ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] Difference between real filters (FL1 thru FL4) and DSP filters (SF1 thru SF4)
I have been playing with the KDSP2 on my K2 and was wondering if the DSP filters are significantly different in their effects than the effects of filters FL1 thru FL4. To me, they seem a bit redundant, in terms of audio effect on listening. Noise reduction is remarkable when activated...still learning how to use it for SSB, however. I haven't seen the effects of the notch filter yet...is that supposed to eliminate adjacent carriers? John AB8O ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] RE: Difference between real filters (FL1 thru FL4) and DSPfilters (SF1 thru SF4)
Hi John, The DSP is audio. Its got a sharper cutoff but can be affected by the AGC which is also audio. The crystals filters FL1 -FL4 are IF and closer to the front end and cut interference before the AGC. Yes, in non critical situations, the DSP filters are sharper, but if a loud adjacent signal gets through the IF because a narrow IF filter is not being used it will activate the AGC and desense the signal you are listening to. The best thing to do is narrow it down first with the IF filters, and then use the DSP narrow bandwidths if the IF filtering is not enough. I have some samples of the bandwidths here. http://users.ev1.net/~spituch/Steve's%20Page/Radio/RTTY/RTTY.html By the way, using MixW to align the filters was very easy. Regards, Steve, W2mY/5 -Original Message- On Behalf Of John Wiener I have been playing with the KDSP2 on my K2 and was wondering if the DSP filters are significantly different in their effects than the effects of filters FL1 thru FL4. To me, they seem a bit redundant, in terms of audio effect on listening. -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.405 / Virus Database: 268.12.0/439 - Release Date: 9/6/2006 ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
RE: [Elecraft] RE: Difference between real filters (FL1 thru FL4) andDSPfilters (SF1 thru SF4)
Steve, W2MY/5 wrote: The DSP is audio. Its got a sharper cutoff but can be affected by the AGC which is also audio. The crystals filters FL1 -FL4 are IF and closer to the front end and cut interference before the AGC. - The K2 AGC is not audio AGC. It's derived from RF in a separate I.F. strip dedicated to producing an AGC voltage based on the strength of the signal at the I.F. and the AGC voltage controls the gain of the I.F. amplifier. The AGC circuits are on the control board. NE602 mixer U1 converts the I.F. signal to about 150 kHz. That way any BFO signal at 4.9 MHz can't get into the AGC system. The output of the NE602 is rectified to produce the DC AGC voltage that operates the S meter and which controls the gain of the MC1350 I.F. amplifier (U12) on the RF board. Ron AC7AC ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] RE: Difference between real filters (FL1 thru FL4) and DSPfilters (SF1 thru SF4)
While a still wet behind the ears student several hundred years ago, a professor told me that The best filters for any receiver are at the antenna terminals, before any RF enters the receiver. Once you let it in, it's hard to control. Unfortunately, filters are a bit hard to implement that way, hence the superhetrodyne. Fred K6DGW Auburn CA CM98lw Steven Pituch wrote: Hi John, The DSP is audio. Its got a sharper cutoff but can be affected by the AGC which is also audio. The crystals filters FL1 -FL4 are IF and closer to the front end and cut interference before the AGC. Yes, in non critical situations, the DSP filters are sharper, but if a loud adjacent signal gets through the IF because a narrow IF filter is not being used it will activate the AGC and desense the signal you are listening to. The best thing to do is narrow it down first with the IF filters, and then use the DSP narrow bandwidths if the IF filtering is not enough. I have some samples of the bandwidths here. http://users.ev1.net/~spituch/Steve's%20Page/Radio/RTTY/RTTY.html By the way, using MixW to align the filters was very easy. Regards, Steve, W2mY/5 ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] High current reading
I too see the occasional High Current reading at the beginning of a transmission. Switching to the Voltage/Current display shows current well under the current limit setting. Looks like I am currently having problems with RF getting into my DC power system. I suspect that this might be the cause of the High Current reading blips. Darrell VA7TO K2#5093 On September 5, 2006 05:16 pm, Stephen W. Kercel wrote: A very short instant after switching the VFO mode from split to normal, I got a High Current reading. It only lasted for one dot. -- Darrell Bellerive Amateur Radio Stations VA7TO and VE7CLA Grand Forks, British Columbia, Canada ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] Power/ALC Metering Issues on K2
I have the KSB2 installed, and the audio, etc sounds great. The RF/ALC metering is not right. When I select RF, there is no output. When I select ALC metering, audio carrier, etc work fine. THere is no ALC indication of any kind, no matter what. Any ideas? Mike AI4NS ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] ATSs on CO Trail 9/7-11
John-n0hj and I (Steve/n0tu) will be backpacking the CT for the next 4-days. Hope to work some of you probably on 20/40 or possibly 80m. We'll both have our ATS rigs + ALT and BLT. Hope to CU on the air. Evenings best time depending on storms and fatigue! 72 Steve ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
